Teach Tempest how to count vcpus

If the processor model name contains the "processor" keyword,
get_number_of_vcpus() will report from vcpus count.

This change makes sure get_number_of_vcpus() only matches lines starting with
the "processor" keyword so it doesn't match model name with said keyword.

Change-Id: I79c0e2dd564a1fc69c1c31c425601434a6a07872
Closes-bug: #1525036
2 files changed